su·​per·​hard ˌsü-pər-ˈhärd How to pronounce superhard (audio)
: extremely hard
One way to achieve such a high pressure … is to squeeze a sample between two superhard surfaces.William J. Nellis

Examples of superhard in a Sentence

Recent Examples on the Web Being a parent is superhard. Kate Siber, Outside Online, 13 June 2019

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'superhard.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1891, in the meaning defined above

Time Traveler
The first known use of superhard was in 1891

Dictionary Entries Near superhard

Cite this Entry

“Superhard.” Dictionary, Merriam-Webster, Accessed 14 Jul. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!